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CBSE Notes 2011-2012 » X-Maths-Term1

# Statistics

## While computing mean of grouped data, we assume that the frequencies are

Multiple choice question

While computing mean of grouped data, we assume that the frequencies are

## The abscissa of the point of intersection of the less than type and of the more than type cumulative...

Multiple choice question

The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its

## The median of set of 9 distinct observations is 20.5. If each of the largest 4 observations of the s...

Multiple choice question

The median of set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 2, then the median of the new set

## The A.M. of a set of 50 numbers is 38. If two numbers of the set namely 55 and 45 are discarded, the...

Multiple choice question

The A.M. of a set of 50 numbers is 38. If two numbers of the set namely 55 and 45 are discarded, the A.M. of the remaining set of numbers is

## Mean of 100 items is 49. It was discovered that three items which should have been 60, 70, 80 were w...

Multiple choice question

Mean of 100 items is 49. It was discovered that three items which should have been 60, 70, 80 were wrongly read as 40, 20,50 respectively. The correct mean is

## If the mode of a data is 18 and the mean is 24, then median is

Multiple choice question

If the mode of a data is 18 and the mean is 24, then median is